Operating buttons



FIG. 1 is a front, top, and right side perspective view of operating buttons, showing our new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a right side elevational view thereof;

FIG. 5 is a left side elevational view thereof;

FIG. 6 is a top plan view thereof; and,

FIG. 7 is a bottom plan view thereof.

The broken lines in the drawings depict unclaimed environmental subject matter only and form no part of the claimed design. 

The new, original, and ornamental design for operating buttons, as shown and described. 